Ricerc@Sapienza

Due to their characteristic of providing high energy density and long cycle life, Li-ion batteries are being widely used as power sources for a range of applications, including electric vehicles. The temperature of a Li-ion cell is important for its performance, capacity, efficiency and safety, and it is strongly influenced by the charging and discharging process modalities. Especially during electric vehicle operation, considerable heat is generated in the battery pack that needs to be removed.

This paper describes a set of experimental tests carried out to better understand the thermal behavior of Lithium-ion batteries under load and the capability of various cooling fluids in maintaining the working conditions within a safe range for the cells. Despite several theoretical models are available in the literature, very few experimental data are reported. Different types of cells have been analyzed.

Despite the efforts made, the number of accidents has not significantly decreased in the construction industry. The main reasons can be found in the peculiarities of working activities in this sector, where hazard analysis and safety management are more difficult than in other industries. To deal with these problems, a comprehensive approach for hazard analysis is needed, focusing on the activities in which a working task is articulated since they are characterized by different types of hazards and thus risk levels.

The paper proposes a design for safety methodology based on the use of the Quality Function Deployment (QFD) method, focusing on the need to identify and analyse risks related to a working task in an effective manner, i.e. considering the specific work activities related to such a task. To reduce the drawbacks of subjectivity while augmenting the consistency of judgements, the QFD was augmented by both the Delphi method and the fuzzy logic approach. To verify such an approach, it was implemented through a case study in the agricultural sector.

Natural materials, such as soils, are influenced by many factors acting during their formative and evolutionary process: atmospheric agents, erosion and transport phenomena, sedimentation conditions that give soil properties a non-reducible randomness by using sophisticated survey techniques and technologies. This character is reflected not only in spatial variability of properties which differs from point to point, but also in multivariate correlation as a function of reciprocal distance.

Events like earthquakes, landslides, tsunami and other important occurrences, related to human activities could affect heavily the security of the pipeline constructions. Pipeline used for transportation of gas, petroleum and other hydrocarbons could become dangerous for three main problems that can occur during the operation process:1-Explosions related to malfunction of the system itself; 2-defects of the utilized material; 3-Robbery and sabotage operations.

Sociology and social research dealt with security and safety in the urban spaces since the growing development of big cities close to the industrial areas. This proximity favoured the idea that the security of the urban space could be a commercial product as profitable for companies as essential for citizens.

First identified as a feasible treatment for intractable epilepsy, the ketogenic diet
(KD) has recently gained popularity thanks to growing evidence on applications such
as weight loss, most importantly, but also NAFLD, cancer, neurologic conditions and
chronic pain. As with any treatment, whether pharmacologic or not, the KD might
not be an appropriate intervention for every individual, and a number of contraindications
have been proposed, now deeply rooted into clinical practice, excluding de

Very low-calorie ketogenic diets (VLCKD) are an effective and increasingly used tool for weight loss. Traditionally considered high protein, ketogenic diets are often looked at with concern by clinicians due to the potential harm they pose to kidney function. We herein evaluated the efficacy and safety of a VLCKD in patients with obesity and mild kidney failure. A prospective observational real-life study was conducted on ninety-two patients following a VLCKD for approximately 3 months.

Irregularity of maintenance operations to restore evenness conditions after damages from shocks, weather phenomena or due to the installation of equipment, and substandard execution of the sidewalks are all factors contributing to walking unsuitability, thus to poor comfort and safety levels for pedestrians. All of the above can be solved by appropriate maintenance management programs and the choice of the adequate type as well as the timeliness of maintenance works can optimize the quality of maintenance interventions.